554 Peraga

Peraga (minor planet designation: 554 Peraga) is a minor planet orbiting the Sun that was discovered by German astronomer Paul Götz on January 8, 1905, from Heidelberg.

554 Peraga
Discovery
Discovered byPaul Götz
Discovery siteHeidelberg
Discovery date8 January 1905
Designations
(554) Peraga
PronunciationItalian: [peˈraːɡa]
1905 PS
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc115.51 yr (42190 d)
Aphelion2.7391 AU (409.76 Gm)
Perihelion2.0095 AU (300.62 Gm)
2.3743 AU (355.19 Gm)
Eccentricity0.15364
3.66 yr (1336.3 d)
215.70°
0° 16m 9.84s / day
Inclination2.9349°
295.434°
127.356°
Physical characteristics
Mean radius
47.935±2.05 km[1]
48.23 ± 0.84 km[2]
Mass(6.59 ± 0.66) × 1017 kg[2]
Mean density
1.40 ± 0.15 g/cm3[2]
13.7128 h (0.57137 d)
0.0496±0.005
9.1

    13-cm radar observations of this asteroid from the Arecibo Observatory between 1980 and 1985 were used to produce a diameter estimate of 101 km.[3]

    References

    1. Yeomans, Donald K., "554 Peraga", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 7 May 2016.
    2. Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
    3. Ostro, S. J.; et al. (August 1985), "Mainbelt asteroids - Dual-polarization radar observations", Science, 229 (4712), pp. 442–446, Bibcode:1985Sci...229..442O, doi:10.1126/science.229.4712.442, PMID 17738665.


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